package com.sumainfor.common.UnionPay;

import java.io.UnsupportedEncodingException;
import java.security.*;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

/**
 * Created by zwj on 2018/8/11.
 * 只能私钥加签，公钥验签
 */
public class SignUtils {
    /**
     * 生成签名
     *
     * @param params
     * @param privateKey
     * @return
     */
    public static void getSign(Map<String, String> params, String privateKey) {
        MapUtil.cleanNull(params);
        if (params == null||params.size()<1) {
            return ;
        }
        String content = getContent(params);//待签名的内容
        try {
            PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(Base64.decode(privateKey));
            KeyFactory keyf = KeyFactory.getInstance("RSA");
            PrivateKey priKey = keyf.generatePrivate(priPKCS8);

            Signature signature = Signature.getInstance("SHA256WithRSA");

            signature.initSign(priKey);
            signature.update(content.getBytes("UTF-8"));
            byte[] signed = signature.sign();
            params.put("sign",Base64.encode(signed));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (SignatureException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (InvalidKeySpecException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
    }

    private static String getContent(Map<String, String> params) {
        List<String> keys = new ArrayList<String>(params.keySet());
        Collections.sort(keys);
        StringBuffer sb = new StringBuffer();
        for (String key : keys) {
            sb.append(key + "=");
            String value = params.get(key);
            if (value != null && !"".equals(value.trim())) {
                sb.append(value + "&");
            }
        }
        String content = sb.toString();
        content = content.substring(0, content.length() - 1);
        return content;
    }

    /**
     * 验签
     *
     * @param params
     * @return
     */
    public static boolean verifySign(Map<String, String> params, String publicKey) {
        MapUtil.cleanNull(params);
        try {
            String sign = params.get("sign");
            params.remove("sign");
            byte[] b = (new sun.misc.BASE64Decoder()).decodeBuffer(publicKey);
            X509EncodedKeySpec keySpec = new X509EncodedKeySpec(b);
            KeyFactory factoty = KeyFactory.getInstance("RSA");
            PublicKey pubKey = factoty.generatePublic(keySpec);
            Signature signature = Signature.getInstance("SHA256WithRSA");
            signature.initVerify(pubKey);
            signature.update(getContent(params).getBytes("UTF-8"));
            boolean bverify = signature.verify(Base64.decode(sign));
            return bverify;
        } catch (Exception e) {
            return false;
        }
    }

    private static String publickey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCdCsSdp4iJS5xD9ZVXa4UbtLSFaelIh+ulLpkKAmbniUqz1ZRL0EbqmZInWEGj0ap1MkoQQ6Oe9sLj41qlfR+LLRY5PXbxG/kZ5rBe9hE5Nv322n8b1Xezwxy+7CLwtxrq4549HOKU0t/g4rvt9qq7c+CsqlyJIrWSQCWG+rYHBQIDAQAB";
    static String data = "data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instanceId=I000000000000000001&mobKey=Awp+PR4dO94HojuA0rS4X+cluWahGoaQcybSXMsrkbcYkAAfmBwD9YNszzWcDK/s92do8rn2sm3dCSEgpRdJxruSsbB5kqqOQWKRy4quYLCTmDEyN/P2hc0Fe17FfmAd4+G5W1CGILUSxO3s8RgvTjcqhxYnfwMUcJoCoIywVE8=&notifyUrl=www.baidu.com&timestamp=1231239233";
    static String sign = "cV9bcqDCXa+7VhS3p5iHokqc5ZMo8jAOknrvOWN8PDJPGbiJV2zQNDjp63Yw+1KwuiPGLCREOAy9aiQtgxF3ULw/ixsaERMOrny86+eamUWTNSMP/2JoIIAlIY5ZmCMRnsqGbLfH/n4/PvidNKO4UCIxrdUI7Ipv6X0fTtu7pes=";
    public static void main(String[] args) {
        try {
            byte[] b = (new sun.misc.BASE64Decoder()).decodeBuffer(publickey);
            X509EncodedKeySpec keySpec = new X509EncodedKeySpec(b);
            KeyFactory factoty = KeyFactory.getInstance("RSA");
            PublicKey pubKey = factoty.generatePublic(keySpec);
            Signature signature = Signature.getInstance("SHA256WithRSA");
            signature.initVerify(pubKey);
            signature.update(data.getBytes("UTF-8"));
            boolean bverify = signature.verify(Base64.decode(sign));
            System.out.println(bverify);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
